CN104927390A - Wood plastic material and preparation method thereof - Google Patents
Wood plastic material and preparation method thereof Download PDFInfo
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Abstract
The invention relates to the technical field of building, in particular to a wood plastic material and a preparation method thereof. The wood plastic material is prepared by the following raw materials which comprise, by weight, 150-200 parts of plastic steel, 50-80 parts of foaming boards, 20-50 parts of calcium carbonate, 15-30 parts of wood flour, 20-50 parts of PVC pipe materials, 1-1.5 parts of azodicarbonamide, 0.3-1 part of stearic acid, 1-2 parts of polyethylene wax, 2-3 parts of PVC processing agents and 1-2 parts of chlorinated polyethylene. The provided wood plastic material is good in flatness and smoothness, high temperature resistant, good in ageing-resistant performance, good in stability, not prone to deforming, and good in flame retardant performance. According to the provided preparation method for the wood plastic material, the preparation technology is easy, the maneuverability is strong, the process is easy to control, and the industrial popularization is suitable.
Description
Technical field
The present invention relates to building materials technology field, be specifically related to a kind of Wood-plastic material and preparation method thereof.
Background technology
Wood is moulded, i.e. wood plastic composite (Wood-Plastic Composites WPC), it is the class advanced composite material be in recent years surging forward both at home and abroad, refer to utilize polyethylene, polypropylene and polyvinyl chloride etc., replace common resin adhesive, new wood materials is mixed into the useless vegetable fibre such as wood powder, rice husk, stalk more than more than 35%-70%, then through plastic processings such as extruding, mold pressing, injection moldings, the sheet material produced or section bar.Be mainly used in the industries such as building materials, furniture, logistics packaging.Through the sheet material of hot extrusion molding after plastics and wooden powder are mixed by a certain percentage, be referred to as to extrude wood-plastic composite panel.Wood-plastic material is due to its environmental protection, and save energy, therefore more and more pays close attention to by people and pay attention to.
But also there is certain defect in current Wood-plastic material:
1, ageing-resistant performance is inadequate:
Mainly all indoor use is many for the PVC wood plastic composite material product of existing market development, outdoor use less.Because PVC easily decomposes under high light heat condition, so the ozone resistance of PVC wood plastic, water tolerance, weathering resistance are not high.Outdoor building materials generally with PE wood mould, PP wood moulds, it is poor that PE wood is moulded in anti-oxidant and anti-light capacity of decomposition, is added with oxidation inhibitor effect also not ideal, so cause the intensity of product and colour fastness also very bad, product chambers uses restricted lifetime outward; Thermotolerance is bad, flexible type flexing of being heated.
2, toughness is bad:
The toughness that wood is moulded is lower than plastics parent or resin, so when processing, processing units or mould need to be adjusted accordingly and to transform to meet processing request.
3. poor thermal conductivity:
The poor thermal conductivity of wood plastic composite, and its goods mostly are profiled material, cooling and shaping is more difficult, adopts water-cooled shaping in processing more.
4, inflammable:
Wood plastic composite belongs to inflammable material, limits the range of application of product.
5, withstand shocks or loading structure industrial occasions in application have limitation:
Cohesive force between hydrophilic wood powder (as xylon) and hydrophobic plastics is very little, cause the mechanical strength of goods lower, little when the tensile strength of wood plastic composite and the non-filled plastics of bending strength ratio, fragility is than larger during non-filled plastics, shock strength is corresponding reduction also, and its density generally than pure plastics and timber high.For expanding the corresponding range of application of wood-plastic products, for above defect, coupling agent can be added in formula surface modification is carried out to wood powder, improve the intensity of wood-plastic products, its modulus in tension and bending elastic modulus are improved, but its shock-resistance and ductility, fragility and density do not obtain large improvement.
6, there is certain defect in the course of processing.
And how to overcome above-mentioned defect, the Wood-plastic material that performance is more excellent is provided, becomes the problem that those skilled in the art are devoted to study.
Summary of the invention
The object of this invention is to provide a kind of Wood-plastic material and preparation method thereof, this Wood-plastic material waterproof, fire-retardant, and good stability, not yielding, also have good physical strength, this Wood-plastic material has the profile of solid wood simultaneously, performance is better than solid wood material, saves consumption of wood, more environmental protection.
The present invention also aims to the preparation method providing a kind of Wood-plastic material, the method preparation technology is simple, workable, and process is easy to control, and is suitable for industrialization promotion.
In order to realize above object, the present invention adopts following technical scheme:
A kind of Wood-plastic material, described Wood-plastic material is prepared from primarily of following raw material by weight: plastic-steel 150-200 part, foamed board 50-80 part, calcium carbonate 20-50 part, wood powder 15-30 part, pvc pipe material 20-50 part, Cellmic C 121 1-1.5 part, stearic acid 0.3-1 part, polyethylene wax 1-2 part, PVC processing aid 2-3 part, chlorinatedpolyethylene 1-2 part.
Described raw material also comprises pigment 0.4-1 part.
Described foamed board is polyvinyl chloride panel.
Described PVC processing aid is the HL-100 that Shandong Rike Chemical Co., Ltd. produces.
Described Wood-plastic material is made up of the raw material of following parts by weight: plastic-steel 165-175 part, foamed board 60-70 part, calcium carbonate 30-40 part, wood powder 20-25 part, pvc pipe material 30-40 part, Cellmic C 121 1.2-1.3 part, stearic acid 0.5-0.7 part, polyethylene wax 1.4-1.7 part, PVC processing aid 2.2-2.6 part, chlorinatedpolyethylene 1.3-1.5 part, pigment 0.7 part.
The preparation method of above-mentioned Wood-plastic material, comprises the following steps:
(1) take described raw material by weight, and mix, wherein plastic-steel, foamed board, pvc pipe material are first pulverized before raw material mixing;
(2) heating material step (1) mixed, to 80-120 DEG C, then cools;
(3) by cooled material extrusion moulding, finished product is obtained.
To pulverize described in step (1) as plastic-steel, foamed board, pvc pipe material respectively through broken, abrasive dust to 30-50 order.
In step (1), calcium carbonate used is 1200 object calcium carbonate powderss.
Need in heat-processed described in step (2) to stir material, described stirring velocity is 1000-1400r/min.
Above-mentioned plastic-steel used comes from plastic-steel pipe stub bar or waste material, foamed board derives from billboard stub bar or waste material, pvc pipe material is also stub bar or waste material, before use, need to be cleaned by these raw materials respectively, removing foreign matter, then dries, ensure the ridity of material, finally again material is carried out fragmentation, abrasive dust is for subsequent use.
Calcium carbonate, must ensure that its granularity is at 1000-1200 order, and calcium carbonate powders wants thin, the Wood plastic boards obtained could more smooth, have brightness.Calcium carbonate powders before the use, need be positioned over well-ventilated and the place of drying deposits about 15-25 days, guarantees the ridity of raw material.Water content control ensures the stability of product and the condition of soffening, and calcium carbonate before use, for guaranteeing its ridity, needs first through 80-90 DEG C of pyroprocessing 5-10 minute.
Cellmic C 121 (English name azodicarbonamide) has another name called azodicarbonamide, commodity are called blowing agent AC or Foam agent ADC, a kind of white or pale yellow powder, nontoxic, odorless, nonflammable, there is self-extinguishing, can be used as whipping agent for multiple foam plastic foaming, the foaming of the plastics such as such as PVC, EVC, PP, PE, PS.Ultrafine powder is applicable to require high at imitation leather leatheroid and EVA shoe material, the plastics foaming that aperture is close and uniform.Adopt the foaming product good springiness of Cellmic C 121, abscess footpath is even, intensity good.
Stearic acid, is widely used in the manufacture of PVC plastic pipe, sheet material, section bar, film, is the thermo-stabilizer of PVC, has good oilness and good light, heat stabilization.In plastic pvc pipe, stearic acid contributes to " coking " that prevent in the course of processing, adding in PVC film processing is a kind of effective thermo-stabilizer, can defend cruelly to be placed in the caused finished films variable color of sulfide simultaneously, in the application, stearic acid, also as internal lubricant, improves the mobility of polymkeric substance, improves product surface smooth finish.
Polyethylene wax (PE wax), is called for short polyethylene wax also known as macromolecule wax.Be widely used because of its excellent winter hardiness, thermotolerance, chemical resistant properties and wear resistance.In normal production, this part wax can directly be added in polyolefine processing as a kind of additive, and it can increase gloss and the processing characteristics of product.As lubricant, its stable chemical nature, electrical property are good.Polyethylene wax and polyethylene, polypropylene, poly-cerinic acid ethene, ethylene-propylene rubber(EPR), isoprene-isobutylene rubber intermiscibility are good, can improve the release property of polyethylene, polypropylene, the mobility of ABS and polymethylmethacrylate, polycarbonate.Other exterior lubricant for PVC is compared, and polyethylene wax has stronger lubrication.Simultaneously, polyethylene wax does dispersion agent, lubricant and brightening agent in PVC profile, tubing, pipe fitting, PE, PP molding process, strengthen plasticizing rate, improve toughness and the surface flatness of plastics, and widespread use in the production of PVC one package stabilizer.Because polyethylene wax has very excellent external lubrication effect and stronger internal lubrication effect, the feature good with resin-phase dissolubilities such as polyethylene, polyvinyl chloride, polypropylene, can be used as it extruding, roll, injecting the lubricant in processing, working (machining) efficiency can be improved, prevent and overcome film, tubing, sheet material adheres, improve smoothness and the glossiness of finished product, improve finished appearance.
Its virgin resin of PVC processing aid: PVC add easily decompose man-hour, poor fluidity, shock strength are low, weathering resistance is poor, therefore need in the course of processing, to add all kinds of subsidiary material to improve its performance.As: lubricant, thermo-stabilizer, impact modifier, processing aid etc.In processing aid development & application process, following several large class is roughly divided into: methyl methacrylate (MMA)/acrylate copolymer by product composition, MMA/ styrol copolymer, vinyl cyanide/vinylbenzene etc., current usage quantity is maximum, effect is it is preferred that MMA/ acrylate copolymer.In the present invention, the Main Function of PVC processing aid is:
1) plasticizing process of PVC is accelerated;
2) rheological property of thermoplastic melt is improved;
3) melt mechanical property under thermo-elasticity state is improved;
4) comprehensive functions such as the visual appearance of goods are improved.
Although the addition of processing aid is few, be very important to improving PVC processing characteristics.
Chlorinatedpolyethylene is saturated macromolecular material, outward appearance is white powder, nonpoisonous and tasteless, there is excellent weathering resistance, resistance to ozone, chemical-resistant resistance and ageing-resistant performance, there is good oil-proofness, tinctorial property, toughness good (still having snappiness at-30 DEG C), have good consistency with other macromolecular material, decomposition temperature is higher.Chlorinated polyethylene resin is a kind of novel synthetic materials, it is the anti-impact modifier that PVC plastic is excellent, also be the good synthetic rubber of over-all properties, there is very wide application field, be widely used in the goods such as cable, electric wire, sebific duct, adhesive plaster, product of rubber and plastic, sealing material, flame-retardant conveyor belt, waterproof roll, film and all profiled materials.Containing chlorine element in chlorinatedpolyethylene (CPE), there is splendid flame retardant properties, and have the anti-characteristic of dripping of burning.CPE can also be blended with polypropylene, high and low pressure polyethylene, ABS etc., improves the printing performance of these flame retardant of plastic performance, ageing-resistant performance and goods.CPE can regard the random copolymers of ethene, polyethylene and 1.2 1 Ethylene Dichloride as, its molecular chain is saturated, polarity chlorine atom random distribution, because have excellent physicals and chemical property, is widely used in machinery, electric power, chemical industry, building materials and mine.CPE thermotolerance, resistance to ozone and weather-proof, be ageing-resistantly better than most rubber, oil-proofness is better than butadiene-acrylonitrile rubber (NBR), chloroprene rubber (CR), is ageing-resistantly better than chlorosulphonation vinylchlorid (CSM); The corrosion property such as acid-and base-resisting, salt, nontoxic, difficult combustion, without explosion hazard.
Wood-plastic material provided by the invention, mixes wood powder and plastic-steel waste material, foamed board, pvc pipe material, and then adds multiple auxiliary agent raw material, carried out extrusion moulding, obtained Wood plastic boards.Gained Wood plastic boards has good planeness, slickness, and high temperature resistant, ageing-resistant performance is good, and good stability is not yielding, and has good flame retardant properties.Wood-plastic material provided by the invention, its raw material is mainly derived from stub bar, waste material, mixes with wood powder, adds various properties-correcting agent, is prepared into the Wood-plastic material that various aspects of performance is good, turns waste into wealth, greatly save timber resources, more environmental protection.
The preparation method of Wood-plastic material provided by the invention, its preparation technology is simple, workable, and process is easy to control, and is suitable for industrialization promotion.
Embodiment
Embodiment 1
A kind of Wood-plastic material, composed as follows by weight: plastic-steel 160 parts, polyvinyl chloride panel foamed board 65 parts, 34 parts, calcium carbonate, wood powder 23 parts, 35 parts, pvc pipe material, Cellmic C 121 1.23 parts, stearic acid 0.6 part, polyethylene wax 1.5 parts, PVC processing aid HL-100 (Shandong Rike Chemical Co., Ltd.'s production) 2.5 parts, chlorinatedpolyethylene 1.4 parts, pigment 0.7 part.
The preparation method of this Wood-plastic material is as follows:
(1) described raw material is taken by weight, the described raw material taken is mixed, wherein plastic-steel, foamed board, pvc pipe material are waste and old stub bar, it first cleans up before combination, dry, then respectively through broken, abrasive dust to 30 order, calcium carbonate used is 1200 object calcium carbonate powderss, through 80 DEG C of pyroprocessing 8min before using, keep it dry;
(2) by the heating material to 113 DEG C that step (1) mixes, heat while stirring in heat-processed, stirring velocity is 1280r/min, then cools;
(3) by the extrusion moulding after extruding machine heats plasticizing of cooled material, finished product is obtained.
Embodiment 2
A kind of Wood-plastic material, composed as follows by weight: plastic-steel 150 parts, polyvinyl chloride panel foamed board 70 parts, 40 parts, calcium carbonate, wood powder 15 parts, PVC 40 parts, Cellmic C 121 1 part, stearic acid 0.5 part, polyethylene wax 1.4 parts, PVC processing aid HL-100 (Shandong Rike Chemical Co., Ltd.'s production) 2.6 parts, chlorinatedpolyethylene 1 part, pigment 0.4 part.
The preparation method of this Wood-plastic material is as follows:
(1) described raw material is taken by weight, the described raw material taken is mixed, wherein plastic-steel, foamed board, pvc pipe material are waste and old stub bar, it first cleans up before combination, dry, then respectively through broken, abrasive dust to 50 order, calcium carbonate used is 1200 object calcium carbonate powderss, through 85 DEG C of pyroprocessing 10min before using, keep it dry;
(2) by the heating material to 118 DEG C that step (1) mixes, heat while stirring in heat-processed, stirring velocity is 1400r/min, then cools;
(3) by the extrusion moulding after extruding machine heats plasticizing of cooled material, finished product is obtained.
Embodiment 3
A kind of Wood-plastic material, composed as follows by weight: plastic-steel 200 parts, polyvinyl chloride panel foamed board 50 parts, 30 parts, calcium carbonate, wood powder 20 parts, PVC 50 parts, Cellmic C 121 1.3 parts, stearic acid 0.7 part, polyethylene wax 1.7 parts, PVC processing aid HL-100 (Shandong Rike Chemical Co., Ltd.'s production) 2.2 parts, chlorinatedpolyethylene 1.5 parts, pigment 0.7 part.
The preparation method of this Wood-plastic material is as follows:
(1) described raw material is taken by weight, the described raw material taken is mixed, wherein plastic-steel, foamed board, pvc pipe material are waste and old stub bar, it first cleans up before combination, dry, then respectively through broken, abrasive dust to 40 order, calcium carbonate used is 1200 object calcium carbonate powderss, through 90 DEG C of pyroprocessing 5min before using, keep its ridity;
(2) by the heating material to 82 DEG C that step (1) mixes, heat while stirring in heat-processed, stirring velocity is 1000r/min, then cools;
(3) by the extrusion moulding after extruding machine heats plasticizing of cooled material, finished product is obtained.
Embodiment 4
A kind of Wood-plastic material, composed as follows by weight: plastic-steel 165 parts, polyvinyl chloride panel foamed board 60 parts, 50 parts, calcium carbonate, wood powder 30 parts, PVC 20 parts, Cellmic C 121 1.5 parts, stearic acid 1.0 parts, polyethylene wax 2 parts, PVC processing aid HL-100 (Shandong Rike Chemical Co., Ltd.'s production) 3 parts, chlorinatedpolyethylene 2 parts, pigment 0.6 part.
The preparation method of above-mentioned Wood-plastic material is with embodiment 2.
Embodiment 5
A kind of Wood-plastic material, composed as follows by weight: plastic-steel 175 parts, polyvinyl chloride panel foamed board 80 parts, 20 parts, calcium carbonate, wood powder 25 parts, PVC 30 parts, Cellmic C 121 1.2 parts, stearic acid 0.3 part, polyethylene wax 1 part, PVC processing aid HL-100 (Shandong Rike Chemical Co., Ltd.'s production) 2 parts, chlorinatedpolyethylene 1.3 parts, pigment 1 part.
The preparation method of above-mentioned Wood-plastic material is with embodiment 3.
Here is the Performance Detection to the Wood plastic boards that embodiment of the present invention 1-5 obtains:
1, the density of the sample that obtains of embodiment of the present invention 1-5, water-intake rate, rotproofness, wear resistance, flame retardant resistance and mechanical strength test, concrete outcome is in table 1.
Table 1. embodiment 1-5 gained properties of sample detected result
| Test item | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Density g/cm 3 | 0.88 | 0.85 | 0.97 | 0.95 | 0.82 |
| Water-intake rate/48h increases weight % | 0.62 | 0.58 | 0.64 | 0.69 | 0.56 |
| Rotproofness/weight loss % | 0.59 | 0.72 | 0.68 | 0.64 | 0.67 |
| Wear resistance g/100r | 0.083 | 0.072 | 0.089 | 0.084 | 0.078 |
| Flame retardant resistance/oxygen index | 48 | 42 | 56 | 45 | 43 |
| Tensile strength/MPa | 43 | 58 | 52 | 65 | 63 |
| Bending strength/MPa | 105 | 78 | 95 | 103 | 86 |
| Shock strength KJ/m 2 | 46 | 52 | 38 | 68 | 47 |
2, planeness detects
The Wood plastic boards that Example 1 obtains tilts 45 DEG C and places, and then get 1200 order sand paper and be positioned on Wood plastic boards, sand paper can freely glide, and shows that its planeness is good.Its detected result of embodiment 2-5 gained sheet material is identical with embodiment 1.
3, slickness detects
The Wood plastic boards that Example 1 obtains, horizontal positioned, adopts feeler gauge to detect it, must play its planeness≤0.2mm.Other embodiment detected results are identical with embodiment 1.
Claims (9)
1. a Wood-plastic material, it is characterized in that, described Wood-plastic material is prepared from primarily of following raw material by weight: plastic-steel 150-200 part, foamed board 50-80 part, calcium carbonate 20-50 part, wood powder 15-30 part, pvc pipe material 20-50 part, Cellmic C 121 1-1.5 part, stearic acid 0.3-1 part, polyethylene wax 1-2 part, PVC processing aid 2-3 part, chlorinatedpolyethylene 1-2 part.
2. Wood-plastic material according to claim 1, is characterized in that, described raw material also comprises pigment 0.4-1 part.
3. Wood-plastic material according to claim 2, is characterized in that, described foamed board is polyvinyl chloride panel.
4. Wood-plastic material according to claim 1, is characterized in that, described PVC processing aid is HL-100.
5. Wood-plastic material according to claim 2, is characterized in that, described Wood-plastic material is made up of the raw material of following parts by weight: plastic-steel 165-175 part, foamed board 60-70 part, calcium carbonate 30-40 part, wood powder 20-25 part, pvc pipe material 30-40 part, Cellmic C 121 1.2-1.3 part, stearic acid 0.5-0.7 part, polyethylene wax 1.4-1.7 part, PVC processing aid 2.2-2.6 part, chlorinatedpolyethylene 1.3-1.5 part, pigment 0.7 part.
6. a preparation method for Wood-plastic material according to claim 1, is characterized in that, comprises the following steps:
(1) take described raw material by weight, and mix, wherein first pulverize before plastic-steel, foamed board, the mixing of pvc pipe material;
(2) heating material step (1) mixed, to 80-120 DEG C, then cools;
(3) by cooled material extrusion moulding, finished product is obtained.
7. the preparation method of Wood-plastic material according to claim 6, is characterized in that, to pulverize described in step (1) as plastic-steel, foamed board, pvc pipe material respectively through broken, abrasive dust to 30-50 order.
8. the preparation method of Wood-plastic material according to claim 6, is characterized in that, in step (1), calcium carbonate used is 1200 object calcium carbonate powderss.
9. the preparation method of Wood-plastic material according to claim 6, is characterized in that, needs to stir material in heat-processed described in step (2), and described stirring velocity is 1000-1400r/min.
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| CN106398268A (en) * | 2016-08-31 | 2017-02-15 | 山东霞光实业有限公司 | Building template produced from reclaimed material and preparation method thereof |
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| CN110746684A (en) * | 2019-09-29 | 2020-02-04 | 吉林省远达再生资源有限公司 | Wood-plastic plate and preparation method thereof |
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| CN104927390B (en) | 2017-10-03 |
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